Walmart offers the RCA 54.6" 4K 2160p LED-Backlit LCD Ultra HD Television, model no. RTU5540, for $319.99 with free shipping. That's tied with last week's mention, the lowest price we could find by $100, and a great deal for any 55" 4K television. It features a 3840x2160 (2160p) native resolution, LED backlight, and four HDMI inputs.